Andreas Lehmann

Be aware of the serializer when using AppFabric or Workflow Manager

When you develop a custom activity for Workflow Foundation 4.x xamlx workflows think about the persistence of your arguments and context variables. This are the “ Persistence Best Practices ” which MSDN recommends: “A workflow can only be persisted if...

Published Tue, Nov 26 2013 2:47 PM by alehmann

Filed under: serialization, AppFabric, Workflow Manager

How to manage local files on Windows 8.1 / RT

Hi there, are you looking for a "metro"-style file manager? There is one already built into windows 8.1, the SkyDrive app. Just switch from "SkyDrive" to "This PC" in the headline to access all your local files and folders...

Published Thu, Oct 24 2013 3:49 PM by alehmann

Filed under: WIndows RT, App, Windows 8.1, SkyDrive

Windows Phone 7 Series CTP of the SDK available

You can get your copy of the Windows Phone 7 Series SDK (CTP) at http://developer.windowsphone.com/windows-phone-7-series/ . Grab all your Silverlight knowledge and start developing apps for the new Windows Phone…

Published Tue, Mar 16 2010 8:27 AM by alehmann

Slide Deck and Samples for Windows Mobile Widgets Session at Basta! 2010

Here you can download the slides ( here ) and samples ( here ) I used for my session at Basta! 2010.

Published Thu, Feb 25 2010 1:17 PM by alehmann

Filed under: Samples, Slides, Windows Mobile

HowTo: Enable WCF Message Tracing

In this post I will shortly describe how to enable and use WCF-Message-Tracing. 1. Add tracing to your web.config of the WCF-Service. I use WCF-Config-Editor for this task, so I don’t have to keep all this xml nodes and settings in mind. When you...

Published Thu, Nov 12 2009 8:14 PM by alehmann

Set max upload size for IIS7 web applications

If you want to set the maximum request size, e.g. to define the maximum size for file uploads, you can use the way described in this post: http://developers.de/blogs/nadine_storandt/archive/2009/04/24/moss-set-max-upload-size-on-iis-7.aspx (thanks to...

Published Wed, Jun 24 2009 1:52 PM by alehmann

Filed under: IIS7, ASP.NET

A simple implementation of config files for windows mobile

Have you ever written a mobile application using .NET compact framework and tried to use config files? I think there are many scenarios where you want to have a configurable mobile application. So I can’t understand why Microsoft hasn’t implemented...

Published Tue, May 26 2009 3:06 PM by alehmann

Filed under: Compact Framework

Where the “c:\fakepath” comes from…

Thanks to new security features in IE 8 the file upload will not report the real file path to the control unless you add the page to the trusted site collection of the IE. Instead the “c:\fakepath” is shown to the JavaScript that handles the file upload...

Published Fri, May 15 2009 3:01 PM by alehmann

How to use Entity Framework to query string values with filter conditions

Have you ever tried to filter a LINQ statement by string values. E.g. you want to get all persons where the name starts with letters from ‘A’ to ‘Z’. In this post I will show you how to build a query like this. My first approach was to do a simple <...

Published Wed, Apr 08 2009 2:57 PM by alehmann

Filed under: .NET 3.5, Entity Framework, LINQ

Dynamic where with Entity Framework

In my last project I have to implement a dynamic where filter for some date stored in the Enitity Framework (EF) model. The next picture shows the DB schema of the data. This is a common scenario to store multiple properties of a single item in a very...

Published Wed, Mar 18 2009 6:18 PM by alehmann

Filed under: SQL Server 2008, .NET 3.5, Entity Framework

Update for Silverlight 2

Microsoft has just released a update for Silverlight 2. The release version was Silverlight 2 RTW (2.0.31005.0) . This update installs version Silverlight 2 GDR 1 (2.0.40115.0) [GDR stands for G eneral D istributed R elease]. This is only a bug fix release...

Published Thu, Feb 19 2009 4:07 PM by alehmann

Filed under: Silverlight 2

Microsoft has released Service Pack 3 for SQL Server 2005

On 15. December Microsoft has released Service Pack 3 for SQL Server 2005. The new version number after applying the service pack is 9.00.4035. You can find the download here: http://www.microsoft.com/downloads/details.aspx?FamilyID=ae7387c3-348c-4faa...

Published Tue, Dec 16 2008 11:00 AM by alehmann

Silverlight Tools for Visual Studio 2008 SP1 final available

Regarding to my last post here is the Link to the final of the Microsoft Silverlight Tools for Visual Studio 2008 SP1: http://www.microsoft.com/downloads/details.aspx?FamilyId=c22d6a7b-546f-4407-8ef6-d60c8ee221ed&displaylang=en

Published Tue, Oct 28 2008 4:49 PM by alehmann

Silverlight 2 is available for Download

Download Silverlight 2 here: http://www.microsoft.com/silverlight/ Microsoft Silverlight Tools for Visual Studio 2008 SP1 ( RC1 ) can be found here: http://www.microsoft.com/downloads/details.aspx?FamilyID=c22d6a7b-546f-4407-8ef6-d60c8ee221ed&DisplayLang...

Published Tue, Oct 14 2008 11:26 AM by alehmann

Filed under: Visual Studio 2008, Silverlight 2

Saving not permitted in SQL Server Management Studio 2008

"Saving changes is not permitted. The changes you have made require the following tables to be dropped ..." I found that this is one of the most annoying default settings I ever saw in a development tool. In this dialog you can save the text...

Published Thu, Sep 04 2008 9:01 PM by alehmann

Filed under: SQL Server 2008

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